Differential Thermal Analysis Essay

3900 Words8 Pages
bulb-icon

Recommended: Specific heat capacity lab discussion

Differential scanning calorimeter (DSC):
Abstract:
The report is written to explain DSC, the thermal analysis technique. In this technique the differential analysis on the base of reference material is done at different temperature. A very close and similar technique is DTA (Differential Thermal Analysis) . In these technique the material is heated at different temperature although sometimes isothermal analysis also done for specific applications. The temperature is recorded for any heat release or absorption. So the heat capacity is measured at those temperatures. Two possible modes for DSC are power compensation mode and heat flux mode DSC. So, DSC is a technique which measure the heat capacity at various temperature of material and reference. …show more content…

In this technique the differential analysis on the base of reference material is done at different temperature. A very close and similar technique is DTA (Differential Thermal Analysis) . In these technique the material is heated at different temperature although sometimes isothermal analysis also done for specific applications. The temperature is recorded for any heat release or absorption. So the heat capacity is measured at those temperatures. Two possible modes for DSC are power compensation mode and heat flux mode DSC. So, DSC is a technique which measure the heat capacity at various temperature of material and reference. M.J.O Neill and E.S Watson has discovered this technique in 1962 . The technique is represented in 1963 at the conference of Analytical chemistry and applied spectroscopy. The main classifications …show more content…

These reactions are studied using DSC.
In case of carbohydrates a phenomena called gelatinization (A physiochemical transformation due to heat treatment of carbohydrates) is studied using the DSC as the DSC uses enthalpy changes to study the phase transformation during these reactions. Applications in liquid crystals:
Liquid crystal is transient state between the liquid and solid transitions, in which the molecules has the orderly arrangement of solid crystals as well as the flow properties of liquids. These states has anisotropic behavior and used for color sensors and color displays. The small energy changes from the isotropic phases (solids or liquids) to liquid crystals, are important for properties of liquid crystals. DSC is used to study these small changes. Oxidative capacity:
DSC is used to study the oxidation of substance by using an air sealed chamber in DSC. The test is done at constant temperature. The nitrogen atmosphere is then replaced with oxygen with a moderate pace. The oxidation reaction is then studied as the product has different enthalpy. This test is used to study the storage capabilities of the

Show More
Related

  • Specific Heat Lab

    357 Words  | 1 Pages

    The purpose of this lab was to calculate the specific heat of a metal cylinder

    Read More

  • Determination of the Enthalpy Change of a Reaction

    1680 Words  | 4 Pages

    Determination of the Enthalpy Change of a Reaction. Determine the enthalpy change of the thermal decomposition of calcium carbonate by an indirect method based on Hess' law. Determination of the Enthalpy Change of a Reaction. Determine the enthalpy change of the thermal decomposition of calcium carbonate by an indirect method based on Hess' law. Using the proposed method of obtaining results, these values were gathered.

    Read More

  • Lab Experiment: Calorimetry And Specific Heat

    1312 Words  | 3 Pages

    The objective of this experiment was to identify a metal based on its specific heat using calorimetry. The unknown metals specific heat was measured in two different settings, room temperature water and cold water. Using two different temperatures of water would prove that the specific heat remained constant. The heated metal was placed into the two different water temperatures during two separate trials, and then the measurements were recorded. Through the measurements taken and plugged into the equation, two specific heats were found. Taking the two specific heats and averaging them, it was then that

    Read More

  • Thermocouple Essay

    608 Words  | 2 Pages

    RTDs are sensors used to measure temperature by relating the resistance of the RTD element with temperature. Most RTD elements are made up of finely coiled wire wrapped around a ceramic or glass core.The RTD element is made from a pure material which is usually platinum, nickel or copper. Platinum is often the choice made in resistance thermometers as it can measure different measures of extreme ends, is very unreactive and has a linear resistance relationship with temperature.The material has a calculable change in resistance as the temperature changes and this change is used to determine the temperature. RTDs are typically used to measure fluid or gas temperatures in pipes and tanks.

    Read More

  • Finite Element Analysis Essay

    1369 Words  | 3 Pages

    Finite element analysis (FEA) is a computerized method for predicting how a product reacts to real-world forces, vibration, heat, fluid flow, and other physical effects. Traditionally, a branch of Solid Mechanics. Nowadays, a commonly used method for multiphysics problems. Integrates Finite Element Analysis (FEA) in every 3D design of an machine. FEA visualizations ensure proper design by eliminating unnecessary costs and weight in a machine, while maximizing the structural strength of each of the machine’s components. Using FEA methods, it can simulate torque, stress, and strain to verify how they are distributed amongst a part.

    Read More

  • Baffles Essay

    2544 Words  | 6 Pages

    The steady state of the heat transfer rate is implicit to be equal to the heat loss from the test section which can be

    Read More

  • Isothermal Programming And Temperature Programming

    837 Words  | 2 Pages

    The oven serves to control the temperature of the column within a few tenths of a degree to conduct precise work. The oven can be operated in two manners: isothermal programming or temperature programming. In isothermal programming, the temperature of the column is held constant throughout the entire separation. The optimum column temperature for isothermal operation is about the middle point of the boiling range of the sample. However, isothermal programming works best only if the boiling point range of the sample is narrow. If a low isothermal column temperature is used with a wide boiling point range, the low boiling fractions are well resolved but the high boiling fractions are slow to elute with extensive band broadening. If the

    Read More

  • Analysis Of Newton's Law Of Viscosity

    1004 Words  | 3 Pages

    This number can be used to determine the thermal conductivity of gases at high temperature and it also delivers us the information about the thickness of thermal and hydrodynamic boundary layer.

    Read More

  • Heat Transfer Essay

    1473 Words  | 3 Pages

    Heat energy is transferred through three ways- conduction, convection and radiation. All three are able to transfer heat from one place to another based off of different principles however, are all three are connected by the physics of heat. Let’s start with heat- what exactly is heat? We can understand heat by knowing that “heat is a thermal energy that flows from the warmer areas to the cooler areas, and the thermal energy is the total of all kinetic energies within a given system.” (Soffar, 2015) Now, we can explore the means to which heat is transferred and how each of them occurs. Heat is transferred through conduction at the molecular level and in simple terms, the transfers occurs through physical contact. In conduction, “the substance

    Read More

  • Essay On Gels

    1562 Words  | 4 Pages

    I find it fascinating that we can make a gel from an animal product (gelatin) but we can also replicate that with a plant product like pectin. The gel structure not only is important for structure, it is essential to keep the product from deforming, adding flavor, increasing stability, texture, etc. It is really interesting to know that we can easily make such products. After doing some research I found three products; shirataki (tofu) noodles, instant puddings, and gummy confectionaries all have gel structures and are pretty different from each other. All of the products are mixed gels meaning they contain more than one gelling agent. I want to look at the gelation process and the manner in which it is illustrated by all three. It is interesting that all three are pretty different from each other yet they are called gels. I am going to explore more in to this idea. All three are considered mixed gels. The gel structure not only is important for structure, it is essential to keep product from deforming, adding flavor, increasing stability, texture, etc. “Gels can be considered as soft glassy materials where the non-crystalline and random organization within the system induces a metastable state.” (Renard2006) I will look at the textures of all three foods and demonstrate how gels affect it. I am particularly interested in gummy confectionaries and their gel structures. Characterization of gels can be performed by using rheological measurements. They seem so complicated but they are pretty simple indeed. I have always been fascinated with confectionaries and how they can have the structure and texture that have. Gels are very intriguing and it is mesmerizing to know that a multitude of products that are and can be used for. The...

    Read More

  • Euler Method Essay

    1786 Words  | 4 Pages

    the degree of the highest order derivative in the ode is called the degree of the ode.

    Read More

  • Liquid Crystals

    973 Words  | 2 Pages

    We were all taught that there were four states of matter: Solids, Liquids, Gases, and Plasma, but some states of matter cannot be defined by one the these four. One of which are liquid crystals. These crystals have properties of both liquids and solids. They physically flow like liquids, but also share characteristics of crystalline solids. There is also more then one type of liquid crystals along with their different phases. Since they have so many properties, its no wonder how much we use them today. They can be found in the majority of today’s electronics and technologies.

    Read More

  • Importance Of Cable Sizing And Selection

    2831 Words  | 6 Pages

    Given below is a table having initial and final temperature mention for different types of material, initial temperature is the maximum operating temperature of the cable and the final temperature is the limiting temperature of the cable.

    Read More

  • Temperature Sensor Advantages And Disadvantages

    774 Words  | 2 Pages

    The amount of heat observes is sensed using sensor called temperature sensor. Mostly, there are two types of temperature sensor contact and noncontact. Examples of contact sensor are thermocouple, RTD, thermistor, thermometer, diodes, etc. And examples of noncontact sensors are radiation and pyrometers. The output of temperature sensor is smaller in amplitude as well as low signal power so amplifier is used to amplify weak signal.

    Read More

  • Heat Transfer Research

    892 Words  | 2 Pages

    The term extended surface is commonly used to depict an important special case involving heat transfer by conduction within a solid and heat transfer by convection (and/or radiation) from the boundaries of the solid. Extended surfaces are used to increase the surface area and to increase the total rate of heat transfer. A temperature gradient exist between two different temperature surfaces for heat transfer. The temperature distribution along the fin or pin must be known to determine the heat transfer from the surface to its surroundings. Plate fins are mostly used in aircrafts, cryogenic and other industries. By considering the insulated tip extended surface the temperature distribution in terms of hyperbolic function expressed as

    Read More

More about Differential Thermal Analysis Essay

Open Document